diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 4735f24..7d80ac1 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -7,6 +7,8 @@
 from frappe import _
 from frappe.desk.reportview import get_match_cond
 from frappe.model.document import Document
+from frappe.query_builder import Interval
+from frappe.query_builder.functions import Count, CurDate, Date, UnixTimestamp
 from frappe.utils import add_days, flt, get_datetime, get_time, get_url, nowtime, today
 
 from erpnext import get_default_company
@@ -297,17 +299,19 @@
 				user.welcome_email_sent = 1
 
 
-def get_timeline_data(doctype, name):
+def get_timeline_data(doctype: str, name: str) -> dict[int, int]:
 	"""Return timeline for attendance"""
+
+	timesheet_detail = frappe.qb.DocType("Timesheet Detail")
+
 	return dict(
-		frappe.db.sql(
-			"""select unix_timestamp(from_time), count(*)
-		from `tabTimesheet Detail` where project=%s
-			and from_time > date_sub(curdate(), interval 1 year)
-			and docstatus < 2
-			group by date(from_time)""",
-			name,
-		)
+		frappe.qb.from_(timesheet_detail)
+		.select(UnixTimestamp(timesheet_detail.from_time), Count("*"))
+		.where(timesheet_detail.project == name)
+		.where(timesheet_detail.from_time > CurDate() - Interval(years=1))
+		.where(timesheet_detail.docstatus < 2)
+		.groupby(Date(timesheet_detail.from_time))
+		.run()
 	)
 
 
diff --git a/erpnext/setup/doctype/sales_person/sales_person.py b/erpnext/setup/doctype/sales_person/sales_person.py
index 0082c70..beff7f5 100644
--- a/erpnext/setup/doctype/sales_person/sales_person.py
+++ b/erpnext/setup/doctype/sales_person/sales_person.py
@@ -2,8 +2,13 @@
 # License: GNU General Public License v3. See license.txt
 
 
+from collections import defaultdict
+from itertools import chain
+
 import frappe
 from frappe import _
+from frappe.query_builder import Interval
+from frappe.query_builder.functions import Count, CurDate, UnixTimestamp
 from frappe.utils import flt
 from frappe.utils.nestedset import NestedSet, get_root_of
 
@@ -77,61 +82,31 @@
 	frappe.db.add_index("Sales Person", ["lft", "rgt"])
 
 
-def get_timeline_data(doctype, name):
+def get_timeline_data(doctype: str, name: str) -> dict[int, int]:
+	def _fetch_activity(doctype: str, date_field: str):
+		sales_team = frappe.qb.DocType("Sales Team")
+		transaction = frappe.qb.DocType(doctype)
 
-	out = {}
-
-	out.update(
-		dict(
-			frappe.db.sql(
-				"""select
-			unix_timestamp(dt.transaction_date), count(st.parenttype)
-		from
-			`tabSales Order` dt, `tabSales Team` st
-		where
-			st.sales_person = %s and st.parent = dt.name and dt.transaction_date > date_sub(curdate(), interval 1 year)
-			group by dt.transaction_date """,
-				name,
-			)
+		return dict(
+			frappe.qb.from_(transaction)
+			.join(sales_team)
+			.on(transaction.name == sales_team.parent)
+			.select(UnixTimestamp(transaction[date_field]), Count("*"))
+			.where(sales_team.sales_person == name)
+			.where(transaction[date_field] > CurDate() - Interval(years=1))
+			.groupby(transaction[date_field])
+			.run()
 		)
-	)
 
-	sales_invoice = dict(
-		frappe.db.sql(
-			"""select
-			unix_timestamp(dt.posting_date), count(st.parenttype)
-		from
-			`tabSales Invoice` dt, `tabSales Team` st
-		where
-			st.sales_person = %s and st.parent = dt.name and dt.posting_date > date_sub(curdate(), interval 1 year)
-			group by dt.posting_date """,
-			name,
-		)
-	)
+	sales_order_activity = _fetch_activity("Sales Order", "transaction_date")
+	sales_invoice_activity = _fetch_activity("Sales Invoice", "posting_date")
+	delivery_note_activity = _fetch_activity("Delivery Note", "posting_date")
 
-	for key in sales_invoice:
-		if out.get(key):
-			out[key] += sales_invoice[key]
-		else:
-			out[key] = sales_invoice[key]
+	merged_activities = defaultdict(int)
 
-	delivery_note = dict(
-		frappe.db.sql(
-			"""select
-			unix_timestamp(dt.posting_date), count(st.parenttype)
-		from
-			`tabDelivery Note` dt, `tabSales Team` st
-		where
-			st.sales_person = %s and st.parent = dt.name and dt.posting_date > date_sub(curdate(), interval 1 year)
-			group by dt.posting_date """,
-			name,
-		)
-	)
+	for ts, count in chain(
+		sales_order_activity.items(), sales_invoice_activity.items(), delivery_note_activity.items()
+	):
+		merged_activities[ts] += count
 
-	for key in delivery_note:
-		if out.get(key):
-			out[key] += delivery_note[key]
-		else:
-			out[key] = delivery_note[key]
-
-	return out
+	return merged_activities
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 20bc9d9..cf12380 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -8,6 +8,8 @@
 import frappe
 from frappe import _
 from frappe.model.document import Document
+from frappe.query_builder import Interval
+from frappe.query_builder.functions import Count, CurDate, UnixTimestamp
 from frappe.utils import (
 	cint,
 	cstr,
@@ -997,18 +999,19 @@
 	).insert()
 
 
-def get_timeline_data(doctype, name):
+def get_timeline_data(doctype: str, name: str) -> dict[int, int]:
 	"""get timeline data based on Stock Ledger Entry. This is displayed as heatmap on the item page."""
 
-	items = frappe.db.sql(
-		"""select unix_timestamp(posting_date), count(*)
-							from `tabStock Ledger Entry`
-							where item_code=%s and posting_date > date_sub(curdate(), interval 1 year)
-							group by posting_date""",
-		name,
-	)
+	sle = frappe.qb.DocType("Stock Ledger Entry")
 
-	return dict(items)
+	return dict(
+		frappe.qb.from_(sle)
+		.select(UnixTimestamp(sle.posting_date), Count("*"))
+		.where(sle.item_code == name)
+		.where(sle.posting_date > CurDate() - Interval(years=1))
+		.groupby(sle.posting_date)
+		.run()
+	)
 
 
 def validate_end_of_life(item_code, end_of_life=None, disabled=None):